Form for casting concrete sewers or the like



July 13 1926. 1,592,486

' D. GARGARO FORM FOR CASTING CONCRETE SEWERS OR THE LIKE Filed Sept. 16, 1925 a )V' I v 8 l6 l 9 QK Z T gt: I? EF T a .1

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gwuenioo filly/718v 5121 aw Patented July 13, 1926 "Domenico GABQABQ; QF ETROI Mic t eAN roRM FOR cas rme oogucnnrn snwnas on THE I Application filed September 16,1925. Serial No. 56,608.

It is the primary object of my invention to provide a form to be used in casting; concrete sewers or other like constructions, which form can be used in; either open cut or tunnel work, and which shall be so con-- structed as to permit of easy and quick; as sembly and disassembly. and which shall not waste concrete by permitting the same to flow through the form, as well as one which may be used to cast various sized sewers or the like.

With the above and other objects in View, my invention consists in the arrangement, combination and construction of the various parts of my improved, device, as described in the specificationfclaiined in my claims and shown in the accompanying drawings, in which:

Fig. 1 is a side elevation showing one unit of my improved form with certain portions thereof cut away. a

Fig. 2 is a sectional View taken on 2-2 of Fig. 1. r

Fig. 3 is a longitudinal, sectional, de tailed view, showing my invention as applied at the joinder of two sections of my improved form.

line

I. have shown my improved device as consisting of a base plate 5 having vertically extending lugs 6' at either end thereof,

said lugs being therein.

The base plate 5 is curved, as more particularly shown in Fig. 2, and a plurality of side plates 8 are assembled upon the base plate to form the greater portion of a tubular form. One of the longitudinal edges of each of the plates 8 is provided with inner strips 9 riveted, or otherwise secured to the plates, as at 10, and exterior lugs 11 riveted or otherwise secured to theplates, as at 12. The strips 9 and lugs 11 overlap the edges of the plates adjacent which they are attached and engage, in the case of those provided with apertures plates 8, which are adjacent the base plate 5, the longitudinal edges of the base plate 5 so as to ellect a closed joint'between the plates, and at the same time secure thenr together. This assembly leaves the top longitudinal edges of the plates 8, which are adjacent the base plate 5, unobstructed, and additional plates 8 are secured thereto by strips 9 and lugs 11, in the same manner as the plates 8 are secured to the base plate 5 As many of the plates 8 as may be neces tween the adjacent ed sary are used to build up the tubular formation of tie form and any opening beges of-the top plates 8 is coveredby a curvedplate 13. Hoops'la. are disposed within the tubularformation. made by the pl ates5,-8 and 13, inorder to supportthem, such hoops being constructed in two halves, the abutting' edges of which are formed with lugs 15 secured together by. bolts 16. Spacing members 17 are provided between the lugs 15 so that after the'concret-e formationhasbeen made around the tubular form, the form may be taken apart by releasing the bolt 16, and removing the spacing members 17, so as to permit'the two piece hoop 14 to collapse.

For the joining together of two or more sections of similar forms, the plates 8 are provided with lugs 18 similar to the lugs 6 having apertures 19 therein similar to the apertures 7 in the lugs 6. Thus when two, sections'of the form are placed end to end, the lugs 6 of the base plates of the two sections willabut, as w'ill also the lugs 18 on the plates 8 of the two sections. Pins 20 are then inserted through the aligned openings 7 and the aligned openings 19 to join the two sections together. It will be apparent, therefore, thatmy improved form may be used with equal advantage in open cut and tunnel work, that as many sections as are desired may be used and that the varioussections may be assembled and disassembled with ease and facility. j g

It will further be apparent that various sizes of sewers or other like objects to be cast may be made from the same forms inasmuch as the curvature of the plates 8 may be varied by springing them inwardly or outwardly, and itwill only be necessary that different sized plates 13 be used in order to cover the top openings left between the plates 8, which are on the top of the forms. It will be apparent that various changes may be made in the arrangement, combination and construction of the various parts of my improved device without departing from the spirit of myinvention, and it is, my intention to cover by my claims such changes as may be reasonably included within the scope thereof. Vhat I claim is: 1. A form of the class described composed of a plurality of horizontally extending and transversely curved plates disposed to provide a tubular construction, hoops Within said plates supporting same With a portion of the Width of said hoops extending beyond the ends of said plates, other horizontally extending and transversely curved plates positioned with the ends thereof meeting the ends of the other plates over the extending portions of said hoops, lugs positioned adjacent the hoops on certain of the plates, and pins carried by at least two of the lugs over the inner face of said hoop,

thereby fastening the horizontally extending sections of said form together.

2. In combination, a plurality of hoops, a horizontally extending and transversely curved base plate extending under said hoops, horizontally extending and transversely curved side plates built up from the base plate on each side of said hoops, each of the 'said side plates having strips on the inside and outside of the lower edges there- 01, only, fitting over the edge of the base or side plate contiguous thereto, and so forming sealed oints between said plates, and a horizontally extending and transversely curved top 7 plate overlaying the top edges of the upper side plates to complete the tubular to an by covering such opening as may remain between the upper edges of said upper side plates.

v.DQMENICO GARGARO. 

